Robert W. Cohn, MEMBER SPIE University of Louisville The ElectroOptics Research Institute Louisville, Kentucky 40292 E-mail: [email protected] Abstract. Most spatial light modulators (SLMs) are limited in that they cannot produce arbitrary complex modulations. Because phase and amplitude are usually coupled, it is difficult to computer design appropriate modulation patterns fast en...

A biological tissue's structure is the most important determinant of its function. Alterations in the function of an organ, due to pathological perturbations, or processes such as development and aging, usually stem from changes that occur at microscopic level. Consequently, an investigative tool that provides information about the underlying microscopic and organizational structure has great u...

For m , d ? N <mml:annotation encoding="appli...

  Objective(s): Adeno-associated virus type 2 (AAV2) vectors are widely used for both experimental and clinical gene therapy. A recent research has shown that the performance of these vectors can be greatly improved by substitution of specific surface-exposed tyrosine residues with phenylalanines. In this study, a fast and simple method is presented to generate AAV2 vector helper plasmids encod...

Based on a fully phase encoding and phase retrieval algorithm, a diffractive-imaging-based optical encryption scheme with random illumination is proposed. In the encryption process, a QR code image is placed in the optic path to modulate the incident light and thus generate a random illumination, which has been demonstrated to enable the proposed scheme to resist the multi-slice ptychographic p...

Introduction: Magnetic resonance imaging (MRI) offers the possibility of in-vivo quantitative measurement of myocardial deformation using displacement encoding with stimulated echoes (DENSE) [1]. DENSE encodes the spatial position at a reference time in the cardiac cycle, usually at the R-wave in the ECG. Readouts are then performed later during the cardiac cycle, producing images with a phase ...

Banach spaces E E of functions holomorphic on the open unit disk alttext="double-struck upper D"> <m...

Let f n ( z</mml...

In this paper, we describe two types of optical security devices: di ractive anti-counterfeiting devices such holograms and microgratings, and encryption techniques such as double-phase encoding and optoelectronic implementation of conventional algorithms. It is shown that holograms are more easily copied than is widely believed, though advanced techniques may soon make duplication far more di ...